CVE-2026-76418
Analyzed
Analyzed - Analysis Complete
Denial of Service in Cisco Secure Firewall ASA and FTD Software
Vulnerability report for CVE-2026-76418, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-28
Last updated on: 2026-10-30
Assigner: Cisco Systems, Inc.
Description
Description
A vulnerability in the Remote Access SSL VPN service of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to logic errors when secondary authentication is configured on a tunnel group. An attacker could exploit this vulnerability by sending a crafted request when connecting to the SSL remote access VPN. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
CVSS Scores
EPSS Scores
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| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| cisco | adaptive_security_appliance_software | 9.24.10 |
| cisco | adaptive_security_appliance_software | to 9.16.4.104 (exc) |
| cisco | adaptive_security_appliance_software | From 9.18 (inc) to 9.18.4.96 (exc) |
| cisco | adaptive_security_appliance_software | From 9.22 (inc) to 9.22.3.200 (exc) |
| cisco | adaptive_security_appliance_software | From 9.23 (inc) to 9.23.1.48 (exc) |
| cisco | adaptive_security_appliance_software | From 9.24.1 (inc) to 9.24.1.27 (exc) |
| cisco | adaptive_security_appliance_software | From 9.19 (inc) to 9.20.4.50 (exc) |
| cisco | secure_firewall_threat_defense | 10.1.0 |
| cisco | secure_firewall_threat_defense | to 7.0.11 (exc) |
| cisco | secure_firewall_threat_defense | From 10.0.0 (inc) to 10.0.3 (exc) |
| cisco | secure_firewall_threat_defense | From 7.2.0 (inc) to 7.2.13 (exc) |
| cisco | secure_firewall_threat_defense | From 7.6.0 (inc) to 7.6.7 (inc) |
| cisco | secure_firewall_threat_defense | From 7.7.0 (inc) to 7.7.14 (exc) |
| cisco | secure_firewall_threat_defense | From 7.3.0 (inc) to 7.4.9 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-690 | The product does not check for an error after calling a function that can return with a NULL pointer if the function fails, which leads to a resultant NULL pointer dereference. |
